Teisco Fuzz

The Teisco Fuzz is a silicon fuzz pedal with a switchable upper octave, part of a three-pedal lineup (Fuzz, Delay and Boost) that relaunched the Teisco brand in 2019. It is an analog circuit in the octave-fuzz tradition: a fuzz whose gain staging can be pushed into an octave-up overtone, with a front-panel switch to turn that octave on or off¹².

Delicious Audio describes the pedal's range as "searing lead lines, gnarly textures, synth-like overtones, and every shade in between," and notes that the circuit "takes inspiration from a furry 70s predecessor," a nod to the felt-covered Foxx Tone Machine¹. Premier Guitar's launch announcement put it the same way: "A classic silicon fuzz circuit with a switchable upper octave that takes inspiration from a furry 70s predecessor"².

Controls and what they do

The pedal keeps the control set simple: three knobs and one switch¹.

The Gain control is worth a closer look for anyone comparing fuzzes. Delicious Audio calls it "more dynamic/extreme than your average fuzz," producing "a fuller, more aggressive sound when turned all the way up" and "a ghostly sound when turned all the way down"¹. The Tone knob "has a wide range and can produce fuzzes from balanced to dark to splatty," in the same source's words¹.

With the octave engaged, the character changes: "the pedal produces a synthy, even gnarlier sound, whose edge can be tamed with lower Gain and a darker" Tone setting¹. Pedal of the Day's reviewer singled out the switch as the highlight:

Pedal of the Day³

Power and switching

The Teisco Fuzz runs on a standard 9V DC supply through a 2.1mm center-negative barrel connector, drawing 30mA¹. Guitar.com's review also lists it as powered by a 9-volt battery or mains supply, so players who prefer batteries have that option⁵. Switching is true bypass with a relay, so the bypassed signal is not colored by the circuit¹.

The enclosure is built with pedalboards in mind: a premium zinc housing with recessed screws, removable feet, and a textured base for stronger velcro sticking¹.

Circuit lineage: the Foxx Tone Machine connection

The "furry 70s predecessor" the announcements point to is the Foxx Tone Machine, a fuzz pedal originally launched in the 1970s by Danelectro owner Steve Ridinger⁶¹. Vintage examples are famous for their fuzzy felt coating, a finish MusicRadar's reviewer describes as "the fuzzy felt coating of US-made Foxx pedals such as the Tone Machine octave fuzz pedal"⁷. TONEHOME's page on the pedal calls it "probably the thickest sounding fuzz on earth" and notes its mode switch, "a switch that goes from standard fuzz to an octave-up fuzz"⁸. GuitarPlayer's Dave Hunter writes that "the Tone Machine quickly found an enthusiastic following and remained a highly regarded variation on the fuzz theme for decades"⁹.

The Teisco Fuzz is not a clone. Josh Scott of JHS Pedals, writing about the Teisco revival, puts the relationship like this¹⁰:

Josh Scott, JHS Pedals¹⁰

So a player shopping for an octave and pitch effect should expect the same basic idea as those circuits, silicon fuzz with a switchable octave-up mode, but with its own voicing rather than a reproduction of either¹⁰¹².

Where it came from

What reviewers said

Guitar.com reviewed the Fuzz alongside the Teisco Boost and Delay in July 2019, scoring the Fuzz 8/10⁵. The review describes the trio as "a silicon octave fuzz, a multi-mode FET booster and an analogue delay with modulation," and lists true bypass and battery or mains power among the Fuzz's features⁵.

Pedal of the Day reviewed the Fuzz in January 2021, calling it "a classic silicon-based circuit" that takes "its inspiration from a furry 1970's predecessor," with the Octave switch as the standout³.

Questions